Unwilling to pay claim on time

I am really unhappy with the service from Discovery Health. I submitted a claim a few weeks ago, when I checked on my status, it had said it was paid. I never received any money, when I phoned them they said they didn't have my banking details and it was my responsibility to make sure my banking details were updated on the system - I don't understand how they could not have my banking details and didn't bother to phone me to get them updated. I am still waiting and every time I phone they log a new inquiry and say it will take 72 hours to process. I am still waiting and nothing is resolved..